(This is written in the style of the anime, meaning each chapter represents one episode, each episode i've tried to name like what it would be named in the anime. So bear with me as it will take a few chapters for the storyline to get going. It takes place inbetween episodes 19 and 20. After they killed Zabuza and before the chunin exams)
(Please bear with me as the storyline and the sections will get better and longer)
THE MISSION LEFT ALONE
Kakashi's eyes quickly open as if he was startled by something, "Lord Hokage, you can't be serious. You really think that he exists." Lord hokage stands up slowly and takes a deep breath. "Summon the other Jounin Squad Leaders. We have much in need of discussing." "Yes Lord Hokage", Kakashi closes his eyes and turns to walk out the door. "Kakashi. Don't tell them what about." Kakashi bows his head slightly as he walks out through the doorway.
(Later)
"You have all been summond here for a very important announcement." The room quickly fills up with chatter. The Jounin squad leaders all talking amungest themselves over just what this important announcement might be. Lord hokage stands up from his chair and the noise in the room dies down quickly. "I am sure you all have heard the legend. The legend about the ultimate ninja." The noise in the room raises back up. "SILENCE. The ninja has been supposedly sighted in a village a little ways from here. The village is a small village completly void of any ninja training. I am asking for volunters to go investigate this sighting. As you all know this ninja could bring about the end of the shinobi way." The noise in the room once again raises in level. Kakashi steps foward after a few seconds. "Lord Hokage, I Kakashi Hatake of squad seven will volunter my services to this mission." The noise level in the room dropped completely. Lord Hokage takes a step foward. "Good Kakashi, and seeing how there are no more. I suggest that you take your squad with you Kakashi." Kakashi looks at Lord Hokage. "Surely you can not be serious Lord Hoka..." "Very well. It is settled. Kakashi and his squad will go to investigate the sighting and if the ninja is found his intent will be discovered and reacted to accordingly. The rest of you can leave. Kakashi will stay and discuss the details of this misson." The rooms slowly empties as Lord Hokage returns to where he was sitting. "Kakashi, I voluntered your squad because of Naruto." Kakashi looks down slightly, "Naruto... I see". "When I heard about the nine-tailed fox chakra incedent with Zabuza I realized that Naruto may be the only chance we have of actually stopping this ninja should he turn against us."